#660D10
Closest named color: Claret (#680018). oklch(33.1% 0.121 25.7), rgb(102, 13, 16).
Aa
White text reads best on this color (12.88:1).
About this color
#660D10 is a dark, moderately saturated red. In OKLCH its lightness is 33%, its chroma 0.121 and its hue 26°. Its hue sits on the warm side of the wheel. The nearest named color is Claret (#680018), ΔE 0.019 away. White text reads best on it, at 12.88:1.
| Hue family | Reds |
| Lightness | dark (33%) |
| Chroma | moderately saturated (0.121) |
| Temperature | warm |
| Nearest name | Claret (#680018) |
| Black text | 1.63:1 |
| White text | 12.88:1 |
Values
| HEX | #660D10 |
| RGB | rgb(102, 13, 16) |
| HSL | hsl(358, 77%, 23%) |
| OKLCH | oklch(33.1% 0.121 25.7) |
Contrast
WCAG 2 contrast ratios are the conformance target: AA needs 4.5:1 for body text and 3:1 for large text, AAA needs 7:1. APCA Lc values are supplementary guidance from the WCAG 3 drafts.
| Pair | WCAG 2 | Result | APCA | APCA guidance |
|---|---|---|---|---|
| White text on #660D10 | 12.88:1 | AAA | Lc -101.1 | Preferred for body text |
| Black text on #660D10 | 1.63:1 | Fails | Lc 0.0 | Not readable |
| #660D10 text on white | 12.88:1 | AAA | Lc 97.6 | Preferred for body text |
| #660D10 text on black | 1.63:1 | Fails | Lc 0.0 | Not readable |
Tints and shades
A 50–950 scale built in OKLCH: the hue is held, lightness follows a Tailwind v4-like curve, and every step is kept inside the sRGB gamut. This color sits at step 900.
-
Step 50
50
#FEF3F1
oklch(97.2% 0.012 29.9)
-
Step 100
100
#FBE4E1
oklch(93.7% 0.026 26.5)
-
Step 200
200
#F9CDC8
oklch(88.5% 0.05 25.7)
-
Step 300
300
#F6AAA2
oklch(80.9% 0.091 25.9)
-
Step 400
400
#EE7970
oklch(70.8% 0.146 25.9)
-
Step 500
500
#E44F4A
oklch(63.1% 0.186 25.9)
-
Step 600
600
#D0282C
oklch(55.7% 0.203 25.9)
-
Step 700
700
#B3161F
oklch(49.1% 0.188 25.8)
-
Step 800
800
#91181C
oklch(42.6% 0.155 25.6)
-
Step 900
900 (this color)
#660D10
oklch(33.1% 0.121 25.7)
-
Step 950
950
#451311
oklch(27% 0.077 26)
#660D10 with color blindness
Simulated with the Machado et al. (2009) model. ΔE is how far the color moves: below about 0.02 you would not notice a change.
| Vision | Seen as | Shift (ΔE) |
|---|---|---|
| Protanopia (no red cones) | #2A250F | 0.133 |
| Deuteranopia (no green cones) | #40380C | 0.119 |
| Tritanopia (no blue cones) | #710010 | 0.024 |
| Achromatopsia (no color) | #323232 | 0.122 |
Harmonies
Hue rotations in OKLCH that keep this color's lightness and chroma.
Complementary
The opposite hue (180°).
- #660D10
#660D10
oklch(33.1% 0.121 25.7)
- #003E44
#003E44
oklch(33.2% 0.057 205.6)
Analogous
Neighbouring hues, 30° either side.
Split complementary
The two hues beside the complement (150° and 210°).
Triadic
Three hues spaced 120° apart.
Palettes with this color
Curated palettes that contain a color within ΔE 0.04 (OKLab) of #660D10, closest first.
Similar named colors
The eight closest entries in our named color list, with their ΔE distance.
- Claret #680018 ΔE 0.019
- Reddy Brown #6E1005 ΔE 0.022
- Blood #770001 ΔE 0.038
- Burgundy #610023 ΔE 0.038
- Wine Red #7B0323 ΔE 0.052
- Maroon #800000 ΔE 0.057
- Bordeaux #7B002C ΔE 0.060
- Chestnut #742802 ΔE 0.065
Use #660D10 in your product
Turn it into light and dark UI roles checked for contrast, then export to Tailwind v4, shadcn/ui, CSS or design tokens.